**Product Specifications:**
**Brand:** EDIFIER
**Model:** W820NB
**Wireless High Definition**
**Comfortable Listening Experience:** Zero pressure sensation, Hi-Res, LDAC, -43dB
**Patented Ear Cushions**
**Dual Gold Standard Certification**
**High Definition Decoding**
**Deep Noise Cancellation**
**Innovative Black Technology**
**Patented Ear Cushions for Comfort**
**Seal Better for Improved Noise Cancellation**
**Hi-Res Dual Gold Standard Certification**
**Wireless and Wired Listening Options**
**Large 40mm Drivers with LDAC and Titanium Composite Diaphragm**
**AI Deep Neural Network for Strong Noise Cancellation**
**-43dB Noise Cancellation Depth**
**Environment Sound Monitoring**
**50-hour Long-lasting Battery Life**
**App Functionality with 0.08s Low Latency**
**Pressure-free Ear Cushions with Patented Technology**
**Acoustic Team Dedicated to Innovation**
**Adjustable Headband for Comfort**
**Soft Headband Padding for Pressure Relief**
**Skin-friendly Protein Leather Ear Cushions**
**Adaptive Extension Support**
**Customizable EQ Settings via App**
**Game Mode with 0.08s Low Latency**
**50-hour Battery Life**
**Lightweight Design with Premium Comfort**
**EdifierConnect App for Enhanced Functionality**
**LDAC Audio Decoding for Rich Detail**
**Active Noise Cancellation up to -43dB**
**AI Call Noise Reduction for Clear Conversations**
**Game Mode with 0.08s Low Latency**
**Dual Listening Modes: Wireless and Wired**
**Dual Gold Standard Certification for Hi-Res Audio**
**Environment Sound Monitoring**
**Customizable EQ Settings**
**Voice Assistant Integration**
**Compatibility with LDAC, aptX HD, AAC, SBC**
**Note: Specifications subject to change without prior notice**
Please note that the above specifications are based on the provided information and may be subject to change by the manufacturer.